UPDATE March 2020: It appears that DuPont no longer supports recycling of Tyvek race bibs. At this time the only race bib recycling option I can find is to use a Sporting Goods Zero Waste Box from TerraCycle. You can find it on their website at this link. They are also sold through some third-party sites which you can find with an Internet search.
I will post further updates as I find out more, since I remain committed to recycling as much race waste as possible.
Jeff Jackson, Happy Planet Running
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Good news from the Zero Waste Running department: one more thing that has been going to the landfill at our events turns out to be recyclable!
I’m talking about a particular item familiar to people who run races of all distances. (See the featured photo if you need a hint.) Read on to find out how to recycle them!